Mix. Shake. Perform. The Vitamin World® 28 oz Shaker Cup is built for your daily supplement routine — whether you're blending a post-workout protein shake, a pre-workout boost, or a hydration mix on the go. 28 oz capacity — enough for a full serving with room to shake Stainless steel mixing ball — breaks up clumps for a smooth, lump-free drink every time Leak-resistant lid — toss it in your gym bag without worry Easy-clean design — wide mouth opening for effortless rinsing Pair it with your favorite Vitamin World® protein powder or amino acids for the perfect performance stack.